A jar contains 2 red, 3 blue, and 4 green marbles. Niki draws one marble
from the jar, and then Tom draws a marble. What is the probability that
Niki will draw a green marble and Tom will draw a blue marble?

My co-worker prefers to bet the same set of five lottery numbers every time, but I say that the probability is the same if you randomly select any set five numbers for the same period of time. Who is right?

A mother and daughter struggle to enumerate possible scores from throwing four
darts at three scoring rings. Doctor Peterson suggests another way to tabulate the
tosses: methodically organize the data into groups of four outcomes rather than
treating each dart individually.

Imagine a line extending infinitely in both directions. A line segment
of length 10m has endpoints at point A and point B, both of which are
on the line. What is the probability that a randomly chosen point on
the line falls on line segment AB?

A man struck by lightning on four separate occasions wants to know how rare that makes him -- and how such long odds compare with winning the lottery. Doctor Wallace obliges, drawing on data from the National Lightning Safety Institute, and treating the accidents as independent events.

Suppose we roll one six-sided die. What are the possible outcomes?
What is the probabiliy of rolling a 4? If we have two dice how many
outcomes are there? With two dice what is the probability of rolling a
5?

Given a box with 12 letters, one of which is a
D, and 2 are E's. I know the probability of getting a D is therefore 1
out of 2, and E is 1 out of 6. How do I determine the
probability of getting a D and then an E, if the D is replaced after
being selected?